Mangrove forests are located in 23 coastal provinces in Thailand. These forests used to cover 368,000 ha in Thailand in 1961, but the area dropped to 240,000 ha by 2002. The major causes of the loss of mangrove forests are timber and charcoal industries, while some areas were converted for urbanization, agriculture, and aquaculture especially shrimp farms. In 2004, a five-year Action Plan for Mangrove Management in the Gulf of Thailand was established to preserve mangrove forests, as well as to promote the sustainable use of mangrove resources.